Relevant Titles:

1. CBSE Class 11 Chemistry: s-Block Elements MCQs with Answers (NCERT Based)

2. Alkali and Alkaline Earth Metals MCQs – Class 11 Chemistry Quiz Online

3. CBSE Online Practice Test: s-Block Elements – Chapter 10 Chemistry MCQs

4. Class 11 Chemistry Objective Questions on s-Block Elements (With Solutions)

5. Free MCQ Test on Alkali and Alkaline Earth Metals – CBSE Class 11 Chemistry

Introduction 

Prepare effectively for your CBSE Class 11 Chemistry Board Exams with this exclusive set of MCQs on Alkali and Alkaline Earth Metals, designed strictly as per the NCERT syllabus. This online practice test covers all important concepts from Chapter 10: The s-Block Elements, including properties, reactions, trends, and comparative behavior of alkali (Group 1) and alkaline earth metals (Group 2).

Each question is crafted to help you understand the reasoning behind chemical trends, reactivity, ionization energy, flame color tests, and the uses of compounds such as NaOH, CaO, and BeCl₂. The quiz format promotes self-assessment through instant feedback and automatic scoring, enabling students to evaluate their conceptual understanding efficiently.

Ideal for CBSE, NEET, and foundational competitive exam preparation, these MCQs help Class 11 students strengthen their problem-solving approach in Inorganic Chemistry. Start practicing now to gain confidence and accuracy in your upcoming board and entrance exams.

Sample MCQs with Answers and Explanations

Q1. Which alkali metal has the highest ionization enthalpy?
A) Na B) K C) Li D) Rb
✅ Answer: C) Li
💡 Explanation: Lithium has the smallest atomic size among alkali metals, resulting in the highest ionization enthalpy.

Q2. Which alkaline earth metal carbonate decomposes most easily on heating?
A) BeCO₃ B) MgCO₃ C) CaCO₃ D) BaCO₃
✅ Answer: A) BeCO₃
💡 Explanation: Thermal stability of carbonates increases down the group, so BeCO₃ decomposes most easily.

Q3. The flame color of potassium salt is:
A) Brick red B) Crimson red C) Violet D) Apple green
✅ Answer: C) Violet
💡 Explanation: Potassium imparts a violet (lilac) color to flame due to excitation of its outer electron.

Q4. Which compound is used in the Bayer process for refining bauxite?
A) NaOH B) KOH C) CaO D) MgO
✅ Answer: A) NaOH
💡 Explanation: Sodium hydroxide dissolves alumina from bauxite during the Bayer process.

Q5. Which alkaline earth metal shows amphoteric behavior?
A) Be B) Mg C) Ca D) Sr
✅ Answer: A) Be
💡 Explanation: Beryllium hydroxide reacts with both acids and bases, showing amphoteric nature.